<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

  <style>
    div{
      width: 1000px;
      height: 700px;
      border: 1px solid red;
      /*默认是平铺的*/
      background-image: url("images/1.png");
    }
    .div1{
      background-repeat: repeat-x;
    }
    .div2{
      background-repeat: repeat-y;
    }
    .div3{
      background-repeat: no-repeat;
    }
  </style>
</head>
<body>

<div class="div1"></div>
<div class="div2"></div>
<div class="div3"></div>

</body>
</html>